chris won friends for the united states in far-flung places. he made those people's hopes his own. during the revolution in libya, he risked his life to help protect the libyan people from a tyrant. >> reporter: she spoke of all those lost when the benghazi consulate was attacked by armed militants. sean smith, the technology specialist, who leaves two young children behind. tyrone woods, a former navy s.e.a.l., the father of three little boys. and his fellow former s.e.a.l., glen doherty, a beloved son and brother. >> we've seen rage and violence directed at american embassies over an awful internet video that we had nothing to do with. it is hard for the american people to make sense of that because it is senseless. >> reporter: but the message of today was not just of grief. it was resolve. >> so we will wipe away our tears, stiffen our spines and face the future undaunted. >> reporter: indeed, the state department is in crisis mode, sending additional security to embassies around the world. david? >> martha, thank you. and martha, as you know, the reason for all of that concern